Details
An 18th-Century ivory and brass protractor,
signed Heath & Wing -- 9in. (22.9cm.) long opened; an ivory and brass sector signed Stanley London; another unsigned; an ivory and electrum parallel rule; a scale signed Stanley Great Turnstile Holborn London; another by Elliott Bros.; and another (7)
signed Heath & Wing -- 9in. (22.9cm.) long opened; an ivory and brass sector signed Stanley London; another unsigned; an ivory and electrum parallel rule; a scale signed Stanley Great Turnstile Holborn London; another by Elliott Bros.; and another (7)